Occurrence and Control of Hydrellia chinensis on Wheat and Barley in Ge-ermu Area;

Under constant temperature conditions in the range of 17 -31℃ ,the development rate of black rice stem fly Hydrellia sasakii increased with the temperature as logistic curve,while the survivals of larvae and pupae,fecundity of adults and population trend index increased with temperature as parabola.

There are seven generations of black rice stem fly Hydrellia sasakii Yuasa et Ishitani yearly in Jiangxi Province.

The life parameters of Hydrellia sasakii on rice at 4 growth stage (seedling, tillering, booting, heading) were studied in 1994-1995.

This paper deals with a new record genus, Myathropa Rondani, and a new record species, Myathropa florea (Linnaeus), of the family Syrphidae.

Automobile ultrasonic fly's eye system based on CAN bus and ultrasonic distance measurement